/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:40:44,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:40:44,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:40:44,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:40:44,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:40:44,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:40:44,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:40:44,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:40:44,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:40:44,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:40:44,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:40:44,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:40:44,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:40:44,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:40:44,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:40:44,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:40:44,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:40:44,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:40:44,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:40:44,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:40:44,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:40:44,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:40:44,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:40:44,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:40:44,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:40:44,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:40:44,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:40:44,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:40:44,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:40:44,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:40:44,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:40:44,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:40:44,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:40:44,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:40:44,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:40:44,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:40:44,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:40:44,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:40:44,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:40:44,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:40:44,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:40:44,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:40:45,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:40:45,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:40:45,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:40:45,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:40:45,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:40:45,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:40:45,008 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:40:45,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:40:45,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:40:45,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:40:45,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:40:45,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:40:45,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:40:45,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:40:45,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:40:45,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:40:45,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:40:45,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:40:45,012 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:40:45,012 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:40:45,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:40:45,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:40:45,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:40:45,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:40:45,249 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:40:45,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c [2022-01-11 05:40:45,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936175fdb/59e629db007d4cfbb46c3397bda3b59d/FLAG3c3d37397 [2022-01-11 05:40:45,740 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:40:45,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c [2022-01-11 05:40:45,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936175fdb/59e629db007d4cfbb46c3397bda3b59d/FLAG3c3d37397 [2022-01-11 05:40:45,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936175fdb/59e629db007d4cfbb46c3397bda3b59d [2022-01-11 05:40:45,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:40:45,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:40:45,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:40:45,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:40:45,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:40:45,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:40:45" (1/1) ... [2022-01-11 05:40:45,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2cec2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:45, skipping insertion in model container [2022-01-11 05:40:45,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:40:45" (1/1) ... [2022-01-11 05:40:45,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:40:45,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:40:46,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-01-11 05:40:46,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:40:46,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:40:46,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:40:46,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-01-11 05:40:46,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:40:46,367 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:40:46,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-01-11 05:40:46,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:40:46,457 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:40:46,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46 WrapperNode [2022-01-11 05:40:46,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:40:46,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:40:46,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:40:46,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:40:46,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,590 INFO L137 Inliner]: procedures = 133, calls = 218, calls flagged for inlining = 129, calls inlined = 187, statements flattened = 2796 [2022-01-11 05:40:46,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:40:46,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:40:46,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:40:46,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:40:46,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:40:46,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:40:46,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:40:46,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:40:46,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (1/1) ... [2022-01-11 05:40:46,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:40:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:40:46,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:40:46,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:40:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:40:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:40:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:40:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:40:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:40:46,964 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:40:46,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:40:47,994 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:40:48,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:40:48,002 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:40:48,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:48 BoogieIcfgContainer [2022-01-11 05:40:48,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:40:48,005 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:40:48,005 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:40:48,006 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:40:48,008 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:48" (1/1) ... [2022-01-11 05:40:48,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:40:48 BasicIcfg [2022-01-11 05:40:48,336 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:40:48,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:40:48,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:40:48,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:40:48,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:40:45" (1/4) ... [2022-01-11 05:40:48,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3227a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:40:48, skipping insertion in model container [2022-01-11 05:40:48,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:40:46" (2/4) ... [2022-01-11 05:40:48,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3227a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:40:48, skipping insertion in model container [2022-01-11 05:40:48,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:48" (3/4) ... [2022-01-11 05:40:48,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3227a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:40:48, skipping insertion in model container [2022-01-11 05:40:48,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:40:48" (4/4) ... [2022-01-11 05:40:48,341 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product31.cil.cTransformedIcfg [2022-01-11 05:40:48,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:40:48,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:40:48,388 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:40:48,393 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:40:48,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:40:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 614 states, 611 states have (on average 1.6775777414075286) internal successors, (1025), 613 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 05:40:48,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:48,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:48,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1913429698, now seen corresponding path program 1 times [2022-01-11 05:40:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739736226] [2022-01-11 05:40:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:48,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:48,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:48,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739736226] [2022-01-11 05:40:48,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739736226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:48,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:48,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:40:48,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202274033] [2022-01-11 05:40:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:48,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:40:48,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:40:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:40:48,768 INFO L87 Difference]: Start difference. First operand has 614 states, 611 states have (on average 1.6775777414075286) internal successors, (1025), 613 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:48,867 INFO L93 Difference]: Finished difference Result 967 states and 1590 transitions. [2022-01-11 05:40:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:40:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 05:40:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:48,879 INFO L225 Difference]: With dead ends: 967 [2022-01-11 05:40:48,879 INFO L226 Difference]: Without dead ends: 486 [2022-01-11 05:40:48,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:40:48,898 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:48,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-11 05:40:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-01-11 05:40:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 484 states have (on average 1.6921487603305785) internal successors, (819), 485 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 819 transitions. [2022-01-11 05:40:48,985 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 819 transitions. Word has length 52 [2022-01-11 05:40:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:48,985 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 819 transitions. [2022-01-11 05:40:48,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 819 transitions. [2022-01-11 05:40:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 05:40:48,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:48,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:48,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:40:48,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1098138832, now seen corresponding path program 1 times [2022-01-11 05:40:48,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:48,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067575988] [2022-01-11 05:40:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:48,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:49,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:49,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067575988] [2022-01-11 05:40:49,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067575988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:49,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:49,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:40:49,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172449066] [2022-01-11 05:40:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:49,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:49,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:49,196 INFO L87 Difference]: Start difference. First operand 486 states and 819 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:49,276 INFO L93 Difference]: Finished difference Result 655 states and 1087 transitions. [2022-01-11 05:40:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-11 05:40:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:49,279 INFO L225 Difference]: With dead ends: 655 [2022-01-11 05:40:49,279 INFO L226 Difference]: Without dead ends: 480 [2022-01-11 05:40:49,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:49,281 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 493 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:49,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1075 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-01-11 05:40:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2022-01-11 05:40:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.6910229645093946) internal successors, (810), 479 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 810 transitions. [2022-01-11 05:40:49,356 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 810 transitions. Word has length 53 [2022-01-11 05:40:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:49,356 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 810 transitions. [2022-01-11 05:40:49,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 810 transitions. [2022-01-11 05:40:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-11 05:40:49,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:49,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:49,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:40:49,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2122418173, now seen corresponding path program 1 times [2022-01-11 05:40:49,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:49,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321869769] [2022-01-11 05:40:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:49,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:49,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321869769] [2022-01-11 05:40:49,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321869769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:49,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:49,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:49,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074686573] [2022-01-11 05:40:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:49,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:49,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:49,528 INFO L87 Difference]: Start difference. First operand 480 states and 810 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:49,593 INFO L93 Difference]: Finished difference Result 941 states and 1592 transitions. [2022-01-11 05:40:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-11 05:40:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:49,596 INFO L225 Difference]: With dead ends: 941 [2022-01-11 05:40:49,596 INFO L226 Difference]: Without dead ends: 480 [2022-01-11 05:40:49,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:49,605 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 785 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:49,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 804 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-01-11 05:40:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2022-01-11 05:40:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.686847599164927) internal successors, (808), 479 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 808 transitions. [2022-01-11 05:40:49,632 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 808 transitions. Word has length 101 [2022-01-11 05:40:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 808 transitions. [2022-01-11 05:40:49,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 808 transitions. [2022-01-11 05:40:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 05:40:49,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:49,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:49,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:40:49,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1664190589, now seen corresponding path program 1 times [2022-01-11 05:40:49,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:49,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772212730] [2022-01-11 05:40:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:49,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:49,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:49,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772212730] [2022-01-11 05:40:49,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772212730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:49,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:49,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:49,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175784979] [2022-01-11 05:40:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:49,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:49,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:49,772 INFO L87 Difference]: Start difference. First operand 480 states and 808 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:49,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:49,971 INFO L93 Difference]: Finished difference Result 2268 states and 3836 transitions. [2022-01-11 05:40:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:40:49,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 05:40:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:49,978 INFO L225 Difference]: With dead ends: 2268 [2022-01-11 05:40:49,978 INFO L226 Difference]: Without dead ends: 1812 [2022-01-11 05:40:49,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:40:49,980 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 3823 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:49,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 3835 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2022-01-11 05:40:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 480. [2022-01-11 05:40:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.6847599164926932) internal successors, (807), 479 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 807 transitions. [2022-01-11 05:40:50,006 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 807 transitions. Word has length 103 [2022-01-11 05:40:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:50,006 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 807 transitions. [2022-01-11 05:40:50,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 807 transitions. [2022-01-11 05:40:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 05:40:50,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:50,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:50,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:40:50,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1940188923, now seen corresponding path program 1 times [2022-01-11 05:40:50,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96488356] [2022-01-11 05:40:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:50,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:50,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:50,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96488356] [2022-01-11 05:40:50,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96488356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:50,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:50,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:50,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550757655] [2022-01-11 05:40:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:50,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:50,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:50,104 INFO L87 Difference]: Start difference. First operand 480 states and 807 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:50,148 INFO L93 Difference]: Finished difference Result 945 states and 1592 transitions. [2022-01-11 05:40:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-01-11 05:40:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:50,151 INFO L225 Difference]: With dead ends: 945 [2022-01-11 05:40:50,151 INFO L226 Difference]: Without dead ends: 494 [2022-01-11 05:40:50,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:50,154 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 786 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:50,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 843 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:50,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-11 05:40:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 480. [2022-01-11 05:40:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.6826722338204594) internal successors, (806), 479 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 806 transitions. [2022-01-11 05:40:50,183 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 806 transitions. Word has length 104 [2022-01-11 05:40:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:50,188 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 806 transitions. [2022-01-11 05:40:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 806 transitions. [2022-01-11 05:40:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 05:40:50,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:50,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:50,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:40:50,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash 633496740, now seen corresponding path program 1 times [2022-01-11 05:40:50,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:50,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807180605] [2022-01-11 05:40:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:50,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:50,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:50,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807180605] [2022-01-11 05:40:50,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807180605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:50,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:50,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:50,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147209241] [2022-01-11 05:40:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:50,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:50,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:50,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:50,305 INFO L87 Difference]: Start difference. First operand 480 states and 806 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:50,460 INFO L93 Difference]: Finished difference Result 1374 states and 2318 transitions. [2022-01-11 05:40:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:40:50,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-11 05:40:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:50,464 INFO L225 Difference]: With dead ends: 1374 [2022-01-11 05:40:50,465 INFO L226 Difference]: Without dead ends: 928 [2022-01-11 05:40:50,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:50,467 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 3746 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:50,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 1644 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-01-11 05:40:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 480. [2022-01-11 05:40:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.6784968684759916) internal successors, (804), 479 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 804 transitions. [2022-01-11 05:40:50,505 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 804 transitions. Word has length 105 [2022-01-11 05:40:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:50,506 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 804 transitions. [2022-01-11 05:40:50,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 804 transitions. [2022-01-11 05:40:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 05:40:50,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:50,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:50,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:40:50,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash 778360961, now seen corresponding path program 1 times [2022-01-11 05:40:50,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:50,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285053621] [2022-01-11 05:40:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:50,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:50,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:50,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285053621] [2022-01-11 05:40:50,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285053621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:50,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:50,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:40:50,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235115556] [2022-01-11 05:40:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:50,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:40:50,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:40:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:40:50,630 INFO L87 Difference]: Start difference. First operand 480 states and 804 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:51,021 INFO L93 Difference]: Finished difference Result 2874 states and 4748 transitions. [2022-01-11 05:40:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:40:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-11 05:40:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:51,030 INFO L225 Difference]: With dead ends: 2874 [2022-01-11 05:40:51,030 INFO L226 Difference]: Without dead ends: 2672 [2022-01-11 05:40:51,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:40:51,034 INFO L933 BasicCegarLoop]: 1146 mSDtfsCounter, 5028 mSDsluCounter, 4601 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:51,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 5747 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-11 05:40:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 904. [2022-01-11 05:40:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 1.679955703211517) internal successors, (1517), 903 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1517 transitions. [2022-01-11 05:40:51,131 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1517 transitions. Word has length 107 [2022-01-11 05:40:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:51,131 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1517 transitions. [2022-01-11 05:40:51,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1517 transitions. [2022-01-11 05:40:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 05:40:51,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:51,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:40:51,135 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1852349899, now seen corresponding path program 1 times [2022-01-11 05:40:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191819128] [2022-01-11 05:40:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:51,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:51,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:51,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191819128] [2022-01-11 05:40:51,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191819128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:51,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:51,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:51,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828074503] [2022-01-11 05:40:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:51,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:51,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:51,232 INFO L87 Difference]: Start difference. First operand 904 states and 1517 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:51,405 INFO L93 Difference]: Finished difference Result 2589 states and 4380 transitions. [2022-01-11 05:40:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:40:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-11 05:40:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:51,412 INFO L225 Difference]: With dead ends: 2589 [2022-01-11 05:40:51,412 INFO L226 Difference]: Without dead ends: 1722 [2022-01-11 05:40:51,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:51,417 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 2349 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:51,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 2268 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-01-11 05:40:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 904. [2022-01-11 05:40:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 1.6777408637873754) internal successors, (1515), 903 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1515 transitions. [2022-01-11 05:40:51,491 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1515 transitions. Word has length 108 [2022-01-11 05:40:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:51,491 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1515 transitions. [2022-01-11 05:40:51,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1515 transitions. [2022-01-11 05:40:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 05:40:51,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:51,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:51,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:40:51,494 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1143109970, now seen corresponding path program 1 times [2022-01-11 05:40:51,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105834711] [2022-01-11 05:40:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:51,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:51,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105834711] [2022-01-11 05:40:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105834711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:51,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:40:51,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369092149] [2022-01-11 05:40:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:40:51,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:40:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:40:51,647 INFO L87 Difference]: Start difference. First operand 904 states and 1515 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:52,181 INFO L93 Difference]: Finished difference Result 5414 states and 8947 transitions. [2022-01-11 05:40:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:40:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-11 05:40:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:52,198 INFO L225 Difference]: With dead ends: 5414 [2022-01-11 05:40:52,198 INFO L226 Difference]: Without dead ends: 5054 [2022-01-11 05:40:52,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:40:52,200 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 4277 mSDsluCounter, 4129 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4277 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:52,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4277 Valid, 5597 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-01-11 05:40:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 1729. [2022-01-11 05:40:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 1.6846064814814814) internal successors, (2911), 1728 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2911 transitions. [2022-01-11 05:40:52,337 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2911 transitions. Word has length 109 [2022-01-11 05:40:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:52,337 INFO L470 AbstractCegarLoop]: Abstraction has 1729 states and 2911 transitions. [2022-01-11 05:40:52,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2911 transitions. [2022-01-11 05:40:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 05:40:52,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:52,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:52,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:40:52,341 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1317847171, now seen corresponding path program 1 times [2022-01-11 05:40:52,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:52,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948105133] [2022-01-11 05:40:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:52,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:52,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:52,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948105133] [2022-01-11 05:40:52,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948105133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:52,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:52,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:40:52,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354326889] [2022-01-11 05:40:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:52,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:40:52,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:40:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:40:52,471 INFO L87 Difference]: Start difference. First operand 1729 states and 2911 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:53,443 INFO L93 Difference]: Finished difference Result 6901 states and 11087 transitions. [2022-01-11 05:40:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:40:53,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-11 05:40:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:53,466 INFO L225 Difference]: With dead ends: 6901 [2022-01-11 05:40:53,466 INFO L226 Difference]: Without dead ends: 6280 [2022-01-11 05:40:53,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:40:53,472 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 6735 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6735 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:53,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6735 Valid, 6896 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:40:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2022-01-11 05:40:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 3349. [2022-01-11 05:40:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 1.6944444444444444) internal successors, (5673), 3348 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5673 transitions. [2022-01-11 05:40:53,776 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5673 transitions. Word has length 109 [2022-01-11 05:40:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:53,778 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5673 transitions. [2022-01-11 05:40:53,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5673 transitions. [2022-01-11 05:40:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 05:40:53,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:53,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:53,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:40:53,787 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1332902204, now seen corresponding path program 1 times [2022-01-11 05:40:53,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:53,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236693192] [2022-01-11 05:40:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:53,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:53,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:53,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236693192] [2022-01-11 05:40:53,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236693192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:53,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:53,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:53,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070818836] [2022-01-11 05:40:53,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:53,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:40:53,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:40:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:40:53,887 INFO L87 Difference]: Start difference. First operand 3349 states and 5673 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:54,192 INFO L93 Difference]: Finished difference Result 4399 states and 7281 transitions. [2022-01-11 05:40:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:40:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-11 05:40:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:54,206 INFO L225 Difference]: With dead ends: 4399 [2022-01-11 05:40:54,206 INFO L226 Difference]: Without dead ends: 3668 [2022-01-11 05:40:54,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:54,209 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 839 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:54,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1840 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2022-01-11 05:40:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3349. [2022-01-11 05:40:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 1.6932497013142174) internal successors, (5669), 3348 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5669 transitions. [2022-01-11 05:40:54,480 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5669 transitions. Word has length 110 [2022-01-11 05:40:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:54,480 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5669 transitions. [2022-01-11 05:40:54,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5669 transitions. [2022-01-11 05:40:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 05:40:54,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:54,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:54,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:40:54,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 849226877, now seen corresponding path program 1 times [2022-01-11 05:40:54,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:54,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930206586] [2022-01-11 05:40:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:54,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:54,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:54,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930206586] [2022-01-11 05:40:54,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930206586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:54,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:54,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:54,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337462369] [2022-01-11 05:40:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:54,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:54,590 INFO L87 Difference]: Start difference. First operand 3349 states and 5669 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:55,437 INFO L93 Difference]: Finished difference Result 7955 states and 12713 transitions. [2022-01-11 05:40:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:40:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-11 05:40:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:55,466 INFO L225 Difference]: With dead ends: 7955 [2022-01-11 05:40:55,466 INFO L226 Difference]: Without dead ends: 6960 [2022-01-11 05:40:55,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:40:55,470 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 1650 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:55,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1650 Valid, 4779 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2022-01-11 05:40:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 3579. [2022-01-11 05:40:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3578 states have (on average 1.684460592509782) internal successors, (6027), 3578 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 6027 transitions. [2022-01-11 05:40:55,853 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 6027 transitions. Word has length 110 [2022-01-11 05:40:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:55,854 INFO L470 AbstractCegarLoop]: Abstraction has 3579 states and 6027 transitions. [2022-01-11 05:40:55,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 6027 transitions. [2022-01-11 05:40:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 05:40:55,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:55,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:55,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:40:55,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1447665345, now seen corresponding path program 1 times [2022-01-11 05:40:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:55,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494393953] [2022-01-11 05:40:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:55,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:55,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:55,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494393953] [2022-01-11 05:40:55,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494393953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:55,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:55,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:40:55,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704688299] [2022-01-11 05:40:55,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:55,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:40:56,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:40:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:40:56,000 INFO L87 Difference]: Start difference. First operand 3579 states and 6027 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:57,568 INFO L93 Difference]: Finished difference Result 12763 states and 20515 transitions. [2022-01-11 05:40:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:40:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-11 05:40:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:57,591 INFO L225 Difference]: With dead ends: 12763 [2022-01-11 05:40:57,592 INFO L226 Difference]: Without dead ends: 11520 [2022-01-11 05:40:57,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:40:57,597 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 8110 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8110 SdHoareTripleChecker+Valid, 5767 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:57,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8110 Valid, 5767 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:40:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2022-01-11 05:40:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 6860. [2022-01-11 05:40:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6860 states, 6859 states have (on average 1.6907712494532732) internal successors, (11597), 6859 states have internal predecessors, (11597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6860 states to 6860 states and 11597 transitions. [2022-01-11 05:40:58,150 INFO L78 Accepts]: Start accepts. Automaton has 6860 states and 11597 transitions. Word has length 111 [2022-01-11 05:40:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:58,150 INFO L470 AbstractCegarLoop]: Abstraction has 6860 states and 11597 transitions. [2022-01-11 05:40:58,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6860 states and 11597 transitions. [2022-01-11 05:40:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 05:40:58,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:58,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:58,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:40:58,165 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -653585183, now seen corresponding path program 1 times [2022-01-11 05:40:58,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:58,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006680033] [2022-01-11 05:40:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:58,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:58,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006680033] [2022-01-11 05:40:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006680033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:58,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85749172] [2022-01-11 05:40:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:58,300 INFO L87 Difference]: Start difference. First operand 6860 states and 11597 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:00,399 INFO L93 Difference]: Finished difference Result 19048 states and 30065 transitions. [2022-01-11 05:41:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:00,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-11 05:41:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:00,450 INFO L225 Difference]: With dead ends: 19048 [2022-01-11 05:41:00,450 INFO L226 Difference]: Without dead ends: 17488 [2022-01-11 05:41:00,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:00,458 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 2332 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:00,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 3340 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17488 states. [2022-01-11 05:41:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17488 to 8632. [2022-01-11 05:41:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8631 states have (on average 1.6713011238558684) internal successors, (14425), 8631 states have internal predecessors, (14425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 14425 transitions. [2022-01-11 05:41:01,215 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 14425 transitions. Word has length 111 [2022-01-11 05:41:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:01,216 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 14425 transitions. [2022-01-11 05:41:01,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 14425 transitions. [2022-01-11 05:41:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 05:41:01,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:01,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:01,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:41:01,230 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1686900101, now seen corresponding path program 1 times [2022-01-11 05:41:01,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:01,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14743310] [2022-01-11 05:41:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:01,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:01,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:01,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14743310] [2022-01-11 05:41:01,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14743310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:01,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:01,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:01,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258060630] [2022-01-11 05:41:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:01,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:01,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:01,319 INFO L87 Difference]: Start difference. First operand 8632 states and 14425 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:02,767 INFO L93 Difference]: Finished difference Result 15232 states and 24290 transitions. [2022-01-11 05:41:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:41:02,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-11 05:41:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:02,794 INFO L225 Difference]: With dead ends: 15232 [2022-01-11 05:41:02,795 INFO L226 Difference]: Without dead ends: 13800 [2022-01-11 05:41:02,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:41:02,801 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 1174 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:02,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 3782 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2022-01-11 05:41:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8696. [2022-01-11 05:41:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8696 states, 8695 states have (on average 1.6663599769982749) internal successors, (14489), 8695 states have internal predecessors, (14489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 14489 transitions. [2022-01-11 05:41:03,684 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 14489 transitions. Word has length 112 [2022-01-11 05:41:03,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:03,684 INFO L470 AbstractCegarLoop]: Abstraction has 8696 states and 14489 transitions. [2022-01-11 05:41:03,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 14489 transitions. [2022-01-11 05:41:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 05:41:03,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:03,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:03,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:41:03,700 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1830373147, now seen corresponding path program 1 times [2022-01-11 05:41:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:03,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636378915] [2022-01-11 05:41:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:03,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:03,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:03,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636378915] [2022-01-11 05:41:03,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636378915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:03,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:03,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:41:03,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508532055] [2022-01-11 05:41:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:03,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:41:03,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:41:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:41:03,828 INFO L87 Difference]: Start difference. First operand 8696 states and 14489 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:05,015 INFO L93 Difference]: Finished difference Result 13070 states and 21087 transitions. [2022-01-11 05:41:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:41:05,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-11 05:41:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:05,034 INFO L225 Difference]: With dead ends: 13070 [2022-01-11 05:41:05,034 INFO L226 Difference]: Without dead ends: 9846 [2022-01-11 05:41:05,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:41:05,043 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 2991 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2991 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:05,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2991 Valid, 4963 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2022-01-11 05:41:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 8632. [2022-01-11 05:41:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8631 states have (on average 1.6601784266017843) internal successors, (14329), 8631 states have internal predecessors, (14329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 14329 transitions. [2022-01-11 05:41:05,811 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 14329 transitions. Word has length 112 [2022-01-11 05:41:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:05,811 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 14329 transitions. [2022-01-11 05:41:05,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 14329 transitions. [2022-01-11 05:41:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 05:41:05,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:05,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:05,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:41:05,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1560869734, now seen corresponding path program 1 times [2022-01-11 05:41:05,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:05,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850995364] [2022-01-11 05:41:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:05,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:05,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850995364] [2022-01-11 05:41:05,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850995364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:05,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:05,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:05,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054012321] [2022-01-11 05:41:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:05,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:05,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:05,938 INFO L87 Difference]: Start difference. First operand 8632 states and 14329 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:06,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:06,742 INFO L93 Difference]: Finished difference Result 8944 states and 14718 transitions. [2022-01-11 05:41:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:06,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-11 05:41:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:06,756 INFO L225 Difference]: With dead ends: 8944 [2022-01-11 05:41:06,756 INFO L226 Difference]: Without dead ends: 8632 [2022-01-11 05:41:06,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:41:06,759 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 628 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:06,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 2479 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8632 states. [2022-01-11 05:41:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8632 to 8632. [2022-01-11 05:41:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8631 states have (on average 1.6564708608504228) internal successors, (14297), 8631 states have internal predecessors, (14297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 14297 transitions. [2022-01-11 05:41:07,483 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 14297 transitions. Word has length 115 [2022-01-11 05:41:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:07,483 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 14297 transitions. [2022-01-11 05:41:07,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 14297 transitions. [2022-01-11 05:41:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 05:41:07,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:07,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:07,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:41:07,498 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 478941114, now seen corresponding path program 1 times [2022-01-11 05:41:07,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790996669] [2022-01-11 05:41:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:07,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:07,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790996669] [2022-01-11 05:41:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790996669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:07,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:07,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:07,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53404870] [2022-01-11 05:41:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:07,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:07,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:07,622 INFO L87 Difference]: Start difference. First operand 8632 states and 14297 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:09,688 INFO L93 Difference]: Finished difference Result 21317 states and 33625 transitions. [2022-01-11 05:41:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:09,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 05:41:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:09,713 INFO L225 Difference]: With dead ends: 21317 [2022-01-11 05:41:09,713 INFO L226 Difference]: Without dead ends: 17041 [2022-01-11 05:41:09,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:09,720 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 796 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:09,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 2653 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17041 states. [2022-01-11 05:41:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17041 to 8674. [2022-01-11 05:41:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 1.6532918252046582) internal successors, (14339), 8673 states have internal predecessors, (14339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 14339 transitions. [2022-01-11 05:41:10,543 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 14339 transitions. Word has length 142 [2022-01-11 05:41:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 14339 transitions. [2022-01-11 05:41:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 14339 transitions. [2022-01-11 05:41:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 05:41:10,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:10,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:41:10,556 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -96608229, now seen corresponding path program 1 times [2022-01-11 05:41:10,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:10,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089941582] [2022-01-11 05:41:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:10,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:10,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089941582] [2022-01-11 05:41:10,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089941582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:10,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:10,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:10,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012171838] [2022-01-11 05:41:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:10,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:10,640 INFO L87 Difference]: Start difference. First operand 8674 states and 14339 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:15,223 INFO L93 Difference]: Finished difference Result 38316 states and 60558 transitions. [2022-01-11 05:41:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 05:41:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:15,271 INFO L225 Difference]: With dead ends: 38316 [2022-01-11 05:41:15,271 INFO L226 Difference]: Without dead ends: 34038 [2022-01-11 05:41:15,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:15,283 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 2452 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:15,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 3687 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34038 states. [2022-01-11 05:41:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34038 to 17227. [2022-01-11 05:41:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17227 states, 17226 states have (on average 1.6555787762684315) internal successors, (28519), 17226 states have internal predecessors, (28519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17227 states to 17227 states and 28519 transitions. [2022-01-11 05:41:17,055 INFO L78 Accepts]: Start accepts. Automaton has 17227 states and 28519 transitions. Word has length 142 [2022-01-11 05:41:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:17,056 INFO L470 AbstractCegarLoop]: Abstraction has 17227 states and 28519 transitions. [2022-01-11 05:41:17,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 17227 states and 28519 transitions. [2022-01-11 05:41:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 05:41:17,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:17,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:17,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:41:17,079 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 604440379, now seen corresponding path program 1 times [2022-01-11 05:41:17,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:17,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584567638] [2022-01-11 05:41:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:17,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:17,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:17,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584567638] [2022-01-11 05:41:17,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584567638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:17,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:17,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:17,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866375820] [2022-01-11 05:41:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:17,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:17,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:17,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:17,199 INFO L87 Difference]: Start difference. First operand 17227 states and 28519 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:26,727 INFO L93 Difference]: Finished difference Result 76463 states and 120848 transitions. [2022-01-11 05:41:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:26,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 05:41:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:26,831 INFO L225 Difference]: With dead ends: 76463 [2022-01-11 05:41:26,832 INFO L226 Difference]: Without dead ends: 67942 [2022-01-11 05:41:26,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:26,855 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 2627 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:26,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2627 Valid, 3693 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67942 states. [2022-01-11 05:41:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67942 to 34323. [2022-01-11 05:41:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34323 states, 34322 states have (on average 1.656750772099528) internal successors, (56863), 34322 states have internal predecessors, (56863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34323 states to 34323 states and 56863 transitions. [2022-01-11 05:41:30,789 INFO L78 Accepts]: Start accepts. Automaton has 34323 states and 56863 transitions. Word has length 142 [2022-01-11 05:41:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:30,789 INFO L470 AbstractCegarLoop]: Abstraction has 34323 states and 56863 transitions. [2022-01-11 05:41:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 34323 states and 56863 transitions. [2022-01-11 05:41:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 05:41:30,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:30,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:30,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:41:30,833 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1894296953, now seen corresponding path program 1 times [2022-01-11 05:41:30,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:30,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578450207] [2022-01-11 05:41:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:30,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:30,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578450207] [2022-01-11 05:41:30,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578450207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:30,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:30,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:41:30,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926208383] [2022-01-11 05:41:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:30,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:41:30,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:41:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:41:30,977 INFO L87 Difference]: Start difference. First operand 34323 states and 56863 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:42,495 INFO L93 Difference]: Finished difference Result 94953 states and 150321 transitions. [2022-01-11 05:41:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 05:41:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 05:41:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:42,631 INFO L225 Difference]: With dead ends: 94953 [2022-01-11 05:41:42,631 INFO L226 Difference]: Without dead ends: 81908 [2022-01-11 05:41:42,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2022-01-11 05:41:42,663 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 4895 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:42,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 5469 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81908 states. [2022-01-11 05:41:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81908 to 34579. [2022-01-11 05:41:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34579 states, 34578 states have (on average 1.6518884840071721) internal successors, (57119), 34578 states have internal predecessors, (57119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34579 states to 34579 states and 57119 transitions. [2022-01-11 05:41:46,871 INFO L78 Accepts]: Start accepts. Automaton has 34579 states and 57119 transitions. Word has length 143 [2022-01-11 05:41:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 34579 states and 57119 transitions. [2022-01-11 05:41:46,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 34579 states and 57119 transitions. [2022-01-11 05:41:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 05:41:46,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:46,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:46,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:41:46,921 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash -925518060, now seen corresponding path program 1 times [2022-01-11 05:41:46,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:46,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173938039] [2022-01-11 05:41:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:46,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:47,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:47,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173938039] [2022-01-11 05:41:47,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173938039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:47,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:47,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:41:47,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97813151] [2022-01-11 05:41:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:47,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:47,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:47,029 INFO L87 Difference]: Start difference. First operand 34579 states and 57119 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)